APA (7th ed.) Citation

Downing, A., & Locke, P. (2006). English grammar : a university course / Angela Downing and Philip Locke. / Angela Downing and Philip Locke: A university course / Angela Downing and Philip Locke. (2nd ed.). Routledge.

Chicago Style (17th ed.) Citation

Downing, Angela, and Philip Locke. English Grammar : A University Course / Angela Downing and Philip Locke. / Angela Downing and Philip Locke: A University Course / Angela Downing and Philip Locke. 2nd ed. Abingdon: Routledge, 2006.

MLA (9th ed.) Citation

Downing, Angela, and Philip Locke. English Grammar : A University Course / Angela Downing and Philip Locke. / Angela Downing and Philip Locke: A University Course / Angela Downing and Philip Locke. 2nd ed. Routledge, 2006.

Warning: These citations may not always be 100% accurate.